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core_impl.c
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core_impl.c
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/* RetroArch - A frontend for libretro.
* Copyright (C) 2010-2014 - Hans-Kristian Arntzen
* Copyright (C) 2011-2017 - Daniel De Matteis
* Copyright (C) 2012-2015 - Michael Lelli
* Copyright (C) 2016-2017 - Brad Parker
*
* RetroArch is free software: you can redistribute it and/or modify it under the terms
* of the GNU General Public License as published by the Free Software Found-
* ation, either version 3 of the License, or (at your option) any later version.
*
* RetroArch is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
* without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
* PURPOSE. See the GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along with RetroArch.
* If not, see <http://www.gnu.org/licenses/>.
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#include <errno.h>
#include <boolean.h>
#include <lists/string_list.h>
#include <string/stdstring.h>
#include <libretro.h>
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#ifdef HAVE_NETWORKING
#include "network/netplay/netplay.h"
#endif
#include "core.h"
#include "content.h"
#include "dynamic.h"
#include "msg_hash.h"
#include "managers/state_manager.h"
#include "verbosity.h"
#include "gfx/video_driver.h"
#include "audio/audio_driver.h"
static unsigned core_poll_type = POLL_TYPE_EARLY;
static bool core_inited = false;
static bool core_symbols_inited = false;
static bool core_game_loaded = false;
static bool core_input_polled = false;
static bool core_has_set_input_descriptors = false;
static uint64_t core_serialization_quirks_v = 0;
static struct retro_callbacks retro_ctx;
static struct retro_core_t core;
static void core_input_state_poll_maybe(void)
{
if (core_poll_type == POLL_TYPE_NORMAL)
input_poll();
}
static int16_t core_input_state_poll(unsigned port,
unsigned device, unsigned idx, unsigned id)
{
if (core_poll_type == POLL_TYPE_LATE)
{
if (!core_input_polled)
input_poll();
core_input_polled = true;
}
return input_state(port, device, idx, id);
}
void core_set_input_state(retro_ctx_input_state_info_t *info)
{
core.retro_set_input_state(info->cb);
}
/**
* core_init_libretro_cbs:
* @data : pointer to retro_callbacks object
*
* Initializes libretro callbacks, and binds the libretro callbacks
* to default callback functions.
**/
static bool core_init_libretro_cbs(void *data)
{
struct retro_callbacks *cbs = (struct retro_callbacks*)data;
if (!cbs)
return false;
core.retro_set_video_refresh(video_driver_frame);
core.retro_set_audio_sample(audio_driver_sample);
core.retro_set_audio_sample_batch(audio_driver_sample_batch);
core.retro_set_input_state(core_input_state_poll);
core.retro_set_input_poll(core_input_state_poll_maybe);
core_set_default_callbacks(cbs);
#ifdef HAVE_NETWORKING
if (!netplay_driver_ctl(RARCH_NETPLAY_CTL_IS_DATA_INITED, NULL))
return true;
core_set_netplay_callbacks();
#endif
return true;
}
/**
* core_set_default_callbacks:
* @data : pointer to retro_callbacks object
*
* Binds the libretro callbacks to default callback functions.
**/
bool core_set_default_callbacks(void *data)
{
struct retro_callbacks *cbs = (struct retro_callbacks*)data;
if (!cbs)
return false;
cbs->frame_cb = video_driver_frame;
cbs->sample_cb = audio_driver_sample;
cbs->sample_batch_cb = audio_driver_sample_batch;
cbs->state_cb = core_input_state_poll;
cbs->poll_cb = input_poll;
return true;
}
bool core_deinit(void *data)
{
struct retro_callbacks *cbs = (struct retro_callbacks*)data;
if (!cbs)
return false;
cbs->frame_cb = NULL;
cbs->sample_cb = NULL;
cbs->sample_batch_cb = NULL;
cbs->state_cb = NULL;
cbs->poll_cb = NULL;
core_inited = false;
return true;
}
bool core_uninit_libretro_callbacks(void)
{
return core_deinit(&retro_ctx);
}
/**
* core_set_rewind_callbacks:
*
* Sets the audio sampling callbacks based on whether or not
* rewinding is currently activated.
**/
bool core_set_rewind_callbacks(void)
{
if (state_manager_frame_is_reversed())
{
core.retro_set_audio_sample(audio_driver_sample_rewind);
core.retro_set_audio_sample_batch(audio_driver_sample_batch_rewind);
}
else
{
core.retro_set_audio_sample(audio_driver_sample);
core.retro_set_audio_sample_batch(audio_driver_sample_batch);
}
return true;
}
#ifdef HAVE_NETWORKING
/**
* core_set_netplay_callbacks:
*
* Set the I/O callbacks to use netplay's interceding callback system. Should
* only be called while initializing netplay.
**/
bool core_set_netplay_callbacks(void)
{
/* Force normal poll type for netplay. */
core_poll_type = POLL_TYPE_NORMAL;
/* And use netplay's interceding callbacks */
core.retro_set_video_refresh(video_frame_net);
core.retro_set_audio_sample(audio_sample_net);
core.retro_set_audio_sample_batch(audio_sample_batch_net);
core.retro_set_input_state(input_state_net);
return true;
}
/**
* core_unset_netplay_callbacks
*
* Unset the I/O callbacks from having used netplay's interceding callback
* system. Should only be called while uninitializing netplay.
*/
bool core_unset_netplay_callbacks(void)
{
struct retro_callbacks cbs;
if (!core_set_default_callbacks(&cbs))
return false;
core.retro_set_video_refresh(cbs.frame_cb);
core.retro_set_audio_sample(cbs.sample_cb);
core.retro_set_audio_sample_batch(cbs.sample_batch_cb);
core.retro_set_input_state(cbs.state_cb);
return true;
}
#endif
bool core_set_cheat(retro_ctx_cheat_info_t *info)
{
core.retro_cheat_set(info->index, info->enabled, info->code);
return true;
}
bool core_reset_cheat(void)
{
core.retro_cheat_reset();
return true;
}
bool core_api_version(retro_ctx_api_info_t *api)
{
if (!api)
return false;
api->version = core.retro_api_version();
return true;
}
bool core_set_poll_type(unsigned *type)
{
core_poll_type = *type;
return true;
}
void core_uninit_symbols(void)
{
uninit_libretro_sym(&core);
core_symbols_inited = false;
}
bool core_init_symbols(enum rarch_core_type *type)
{
if (!type)
return false;
if (!init_libretro_sym(*type, &core))
return false;
core_symbols_inited = true;
return true;
}
bool core_set_controller_port_device(retro_ctx_controller_info_t *pad)
{
if (!pad)
return false;
core.retro_set_controller_port_device(pad->port, pad->device);
return true;
}
bool core_get_memory(retro_ctx_memory_info_t *info)
{
if (!info)
return false;
info->size = core.retro_get_memory_size(info->id);
info->data = core.retro_get_memory_data(info->id);
return true;
}
bool core_load_game(retro_ctx_load_content_info_t *load_info)
{
bool contentless = false;
bool is_inited = false;
content_get_status(&contentless, &is_inited);
if (load_info && load_info->special)
core_game_loaded = core.retro_load_game_special(
load_info->special->id, load_info->info, load_info->content->size);
else if (load_info && !string_is_empty(load_info->content->elems[0].data))
core_game_loaded = core.retro_load_game(load_info->info);
else if (contentless)
core_game_loaded = core.retro_load_game(NULL);
else
core_game_loaded = false;
return core_game_loaded;
}
bool core_get_system_info(struct retro_system_info *system)
{
if (!system)
return false;
core.retro_get_system_info(system);
return true;
}
bool core_unserialize(retro_ctx_serialize_info_t *info)
{
if (!info)
return false;
if (!core.retro_unserialize(info->data_const, info->size))
return false;
#if HAVE_NETWORKING
netplay_driver_ctl(RARCH_NETPLAY_CTL_LOAD_SAVESTATE, info);
#endif
return true;
}
bool core_serialize(retro_ctx_serialize_info_t *info)
{
if (!info)
return false;
if (!core.retro_serialize(info->data, info->size))
return false;
return true;
}
bool core_serialize_size(retro_ctx_size_info_t *info)
{
if (!info)
return false;
info->size = core.retro_serialize_size();
return true;
}
uint64_t core_serialization_quirks(void)
{
return core_serialization_quirks_v;
}
void core_set_serialization_quirks(uint64_t quirks)
{
core_serialization_quirks_v = quirks;
}
void core_frame(retro_ctx_frame_info_t *info)
{
if (retro_ctx.frame_cb)
retro_ctx.frame_cb(
info->data, info->width, info->height, info->pitch);
}
bool core_poll(void)
{
if (!retro_ctx.poll_cb)
return false;
retro_ctx.poll_cb();
return true;
}
bool core_set_environment(retro_ctx_environ_info_t *info)
{
if (!info)
return false;
core.retro_set_environment(info->env);
return true;
}
bool core_get_system_av_info(struct retro_system_av_info *av_info)
{
if (!av_info)
return false;
core.retro_get_system_av_info(av_info);
return true;
}
bool core_reset(void)
{
core.retro_reset();
return true;
}
bool core_init(void)
{
core.retro_init();
core_inited = true;
return true;
}
bool core_unload(void)
{
core.retro_deinit();
return true;
}
bool core_unload_game(void)
{
video_driver_free_hw_context();
audio_driver_stop();
core.retro_unload_game();
core_game_loaded = false;
return true;
}
bool core_run(void)
{
#ifdef HAVE_NETWORKING
if (!netplay_driver_ctl(RARCH_NETPLAY_CTL_PRE_FRAME, NULL))
{
/* Paused due to netplay. We must poll and display something so that a
* netplay peer pausing doesn't just hang. */
input_poll();
video_driver_cached_frame();
return true;
}
#endif
switch (core_poll_type)
{
case POLL_TYPE_EARLY:
input_poll();
break;
case POLL_TYPE_LATE:
core_input_polled = false;
break;
default:
break;
}
if (core.retro_run)
core.retro_run();
if (core_poll_type == POLL_TYPE_LATE && !core_input_polled)
input_poll();
#ifdef HAVE_NETWORKING
netplay_driver_ctl(RARCH_NETPLAY_CTL_POST_FRAME, NULL);
#endif
return true;
}
bool core_load(unsigned poll_type_behavior)
{
core_poll_type = poll_type_behavior;
if (!core_verify_api_version())
return false;
if (!core_init_libretro_cbs(&retro_ctx))
return false;
core_get_system_av_info(video_viewport_get_system_av_info());
return true;
}
bool core_verify_api_version(void)
{
unsigned api_version = core.retro_api_version();
RARCH_LOG("%s: %u\n",
msg_hash_to_str(MSG_VERSION_OF_LIBRETRO_API),
api_version);
RARCH_LOG("%s: %u\n",
msg_hash_to_str(MSG_COMPILED_AGAINST_API),
RETRO_API_VERSION);
if (api_version != RETRO_API_VERSION)
{
RARCH_WARN("%s\n", msg_hash_to_str(MSG_LIBRETRO_ABI_BREAK));
return false;
}
return true;
}
bool core_get_region(retro_ctx_region_info_t *info)
{
if (!info)
return false;
info->region = core.retro_get_region();
return true;
}
bool core_has_set_input_descriptor(void)
{
return core_has_set_input_descriptors;
}
void core_set_input_descriptors(void)
{
core_has_set_input_descriptors = true;
}
void core_unset_input_descriptors(void)
{
core_has_set_input_descriptors = false;
}
bool core_is_inited(void)
{
return core_inited;
}
bool core_is_symbols_inited(void)
{
return core_symbols_inited;
}
bool core_is_game_loaded(void)
{
return core_game_loaded;
}